1. Extension rod diameter and the other parts are precision ground to eliminate imbalances, increased stability
during cutting, tighten the nut directly, high rigidity, extremely powerful clamping force.
2. C20 shank holding all ER20A collets.
3. C20 20mm diameter straight extended shank,applicable for deep processing.
4. Extension rod diameter, and other parts have been precision ground to eliminate unbalanc and increase stability during cutting
5. The clamping nuts could be tighten straightly, high rigidity, strong clamping.